* {
  margin: 0;
  padding: 0;
}

ul li {
  list-style: none;
}

$lunboheight: 280px;
$lunbowidth: 520px;

$content3height: 300px;
$content3width: 760px;
#wrap {
  height: $lunboheight;
  width: $lunbowidth;
  margin: 50px auto;
  position: relative;
  overflow: hidden;
}

#nav {
  position: absolute;
  height: 20px;
  width: 200px;
  left: 160px;
  top: 240px;
  background-color: rgba(22, 22, 22, 0.6);
  border-radius: 10px;
  li {
    float: left;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    font-size: 12px;
    color: #ffffff;
    background-color: rgba(134, 33, 200, 0.6);
    text-align: center;
    line-height: 14px;
    margin-left: (200px - 14*5px )/6;
    margin-top: 3px;
  }
  li.select {
    background-color: rgba(156, 66, 100, 0.8);
  }
}

#content2 {
  position: absolute;
  width: $lunbowidth*5;
  height: $lunboheight;
  left: 0;
  top: 0;
  li {
    height: $lunboheight;
    width: $lunbowidth;
    float: left;
    img {
      display: block;
      height: $lunboheight;
      width: $lunbowidth;
    }
  }
}

#wrap3 {
  height: $content3height;
  width: $content3width;
  margin: 50px auto;
  overflow: hidden;
  position: relative;
}

#content3 {
  height: $content3height;
  width: $content3width;
  position: relative;
  li {
    position: absolute;
    height: $content3height;
    width: $content3width;
    display: none;
    img {
      position: absolute;
      height: $content3height;
      width: $content3width;
      left: -$content3width;
      top: 0;
    }
  }
  .select {
    display: block;
  }
}

#content {
  position: absolute;
  overflow: hidden;
  height: $lunboheight;
  width: $lunbowidth;
  left: 0;
  top: 0;
  li {
    position: absolute;
    height: $lunboheight;
    width: $lunbowidth;
    left: $lunbowidth;
    top: 0;
    img {
      display: block;
      height: $lunboheight;
      width: $lunbowidth;
    }
  }
  li.select {
    left: 0;
  }
}

header {
  height: 600px;
  width: 1000px;
  margin: 0 auto;
}

.louti {
  height: 600px;
  width: 1000px;
  margin: 0 auto;
}

nav {
  position: fixed;
  left: 50px;
  top: 200px;
  display: none;
  li {
    list-style: none;
    height: 32px;
    width: 32px;
    text-align: center;
    line-height: 32px;
    border: 1px dotted #cdcdcd;
    position: relative;
    overflow: hidden;
    span {
      position: absolute;
      left: 0;
      top: 32px;
      height: 32px;
      width: 32px;
      display: inline-block;
    }
  }
}

nav li.select span {
  top: 0;
  background-color: red;
}

nav li:hover span {
  top: 0;
  background-color: rgb(89,77,100);
  cursor: pointer;
}

nav li.top {
  background-color: red;
}
